The screw that secures the battery has been stripped and cannot be removed. There was still a small cross groove left, so we used the "DBZ-57 Neji Bazooka, so-called Rapid Screw Extractor (https://x.gd/s1mYh)" to remove it!
*If the cross groove is completely crushed, please use "A Hack of Socket Screw Extractor (https://youtu.be/DwC69uLFD98)".
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